Brake



A. ROSNER April 21, 1936..

BRAKE Original Filed Sept. 17, 1931 INVENTOR. ADOLPH Roawm BY r -ATTORNEY Patented Apr. 21, 1936 UNITED STATES PATENT OFFICE BRAKE AdolphRosner, Rockton, Ill., assignor to Bendix Aviation Corporation, SouthBend, Ind., a corporation of Delaware Original application September 17,1931, Serial No. 563,253. Divided and this application December 1, 1933,Serial No. 700,502

2 Claims. (Cl. 188-795) two nuts, one mounted on each of the parts, and

which are formed to receive the right-and-left threaded floating memberwhich serves as a connection between them, and which can be turned toadjust the friction means to take up for wear.

In the arrangement illustrated, the nuts are held by U-shaped members(shown as stampings) attached to the friction means. These members may,for example, have angular extensions welded to the adjacent ends of thefriction means.

The above and other objects and features of the invention, includingvarious novel combina tions of parts and desirable particularconstructions, will be apparent from the following description of theillustrative embodiment shown in the accompanying drawing, in which:

Figure 1 is a vertical section through the brake, just inside the headof the brake drum, and showing the friction means in side elevation; and

Figure 2 is a partial section through the novel adjustment, on the line2-2 of Figure 1.

The illustrated brake includes a rotatable drum ID, at the open side ofwhich is a suitable backing plate l2. The backing plate I2 has formedthereon or attached thereto anchoring and positioning lugs l4, l6, I8,and 20, extending into slots in a friction band 22. The band 22, atleast at the sides of the brake, is provided with side flanges to formchannel receiving blocks 24 of friction material.

The band is distorted, to force the friction material 24 against thedrum, by means such as a lever 26 formed with a lug 28 at one end inthrust engagement with the inner face of the band, and with a T-shapedcentral lug 30 fulcrumed in a slot in the band, and with a lug 32 at theother end to which is attached a cable or the like 34.

The illustrated cable passes through the backing plate into and througha flexible Bowden conduit (not shown) outside the brake, and thence tothe operating hookup on the chassis frame.

The above-described brake is more completely described, and is claimed,in my parent application No. 563,253, filed September 17, 1931, of whichthe present application is a division.

To the lower ends of the band 22 there are shown welded, or otherwisesecured, angular extensions 38 of stamped U-shaped members 40 which holdrigidly in coaxial alignment two square nuts 42 formed to have threadedtherein the right-and-left threaded ends of an adjusting member 44.Member 44 is shown with a central knurled wheel or flange by which itmay be turned to adjust the brake for wear.

The ends of the band 22, while adjustably separable to compensate forwear, are not intended to be separated in applying the brake in theparticular brake illustrated. Instead of spreading the ends of the bandapart, the band as a whole is distorted, the upper and lower segmentsbeing sprung toward the center of the brake, thus forcing apart the leftand right sides to force the friction blocks 24 against the drum. Theband anchors on one or the other of the two lugs l4 or Hi; the lugs I8and 20 are merely to aid in holding the band in position.

While one illustrative embodiment has been described in detail, it isnot my intention to limit the scope of the invention to that particularembodiment, or otherwise than by the terms of the appended claims.

I claim:

1. A brake friction device having parts adjustably connected by a pairof coaxial nuts, stamped U-shaped members embracing said nuts and havingextensions secured to the friction device, and a connecting memberbetween and threaded into said nuts.

2. A brake friction device having parts adjustably connected by a pairof coaxial nuts, stamped U-shaped members embracing said nuts and havingextensions secured to the friction device, and threaded means adjustablythreaded into said nuts.

ADOLPH ROSNER-

